I've got a Nutone "Heat-a-Vent-a-Lite" bathroom ceiling fan/heater/light/nightlight unit that has performed well for 8 years. Recently, the thermal protector failed on the heater assembly. I have purchased the replacement thermal protector from Nutone/Broan, & hope to be installing it soon. The original installation had the motor supply line connected to the thermal protector using standard blade connectors (since the thermal protector provides two connector blades). There was a snap on insulator (possibly nylon?) protecting both blade connections. These insulators were pretty much destroyed by the heat in the operating environment. I'm looking for a suitable replacement insulator that can withstand the heat that this type of device will need to deal with. I asked the parts supply folks whether they had any suggestions, & came up empty... Does anyone have any experience/suggestions re: this type of repair? Thank you for any repsonses!